[Substantiation of the necessity of developing a single set of phages for serotyping of Vibrio cholerae].

A single set of phages for typing different V. cholerae biotypes has been developed in the USSR and proposed for use instead of two sets of phages intended for this purpose. This set has been developed in view of the following facts: the similarity of the biological properties of V. cholerae biotypes and the absence of absolute criteria for their differentiation; the existence of the foci of cholera with both biotypes circulating there; the probability experimentally confirmed, of the conversion of one biotype into the other.